motorsci
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Posts posted by motorsci
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I read the topic That dragon fly started maybe iam simple but my plan was to measure the before and after valve train weight and figure the difference as a % then subtract that from the valve spring tension and order springs
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I read the topic That dragon fly started maybe iam simple but my plan was to measure the before and after valve train weight and figure the difference as a % then subtract that from the valve spring tension and order springs
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They were 78 grams and now weigh 66 Tim Z
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If I understand it correctly it’s like a stack of straws when it bends
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Thank you all for your input I have titanium retainers locks and DSI valves from Datsun spirt I have a good unmolested. Set of rockers to put in but just enjoying a little time off work and waiting for the machine shop have a press with a tension gauge and was going to make a fixture to measure the deflection at the tip and what it takes to break it compared to a stock rocker here is a pic it ready to polish 66 grams
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This is a old rocker Iam lightening has any one else done this ? It's 10 grams lighter it's not a finished product I just started
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Our local Datsun club is getting ready for our tail of the dragon trip. I have been looking into 2 way radios just curious what others have tried liked or disliked
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If you think its detonation get some copper tubing and a cheep stethoscope from harbor freight pound one end of the copper tube flat and drill a hole in it bolt it on the motor close to the head were the heater hose runs is good run the tube into the car and hook up the stethoscope hose to the tube if you here detonation you know its timing if you don't a least you wont be guessing there are electronic versions of this that I own but I still use this for tuning
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I talked to the turbo shop today they said there is a chance the carbon seal is ok and recommended a .060 restrictor I am going to plum a temporary pressure gauge to the turbo to make sure
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it was at 1200 to 2000 rpm it ran for less than 60 seconds and I shut it off 65psi was the high number
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the next question is has this damaged the turbo it has carbon seal
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I think a restrictor is the answer here but what size? the current is .120
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I should also mention that budget cuts have forced me to be creative with my class 2 hoard this is a stock 240z bottom with a p90 head and notched block for valve clearance. with a 280zx cam and a 280zx turbo oil pump I know it wont make as much power as a 280 turbo but its what I have and Iam sure it will be fun until the next motor. That beaning said this is very well put together hobo motor most of the time this sort of thing starts with 2 cubes of Key stone this was a clean build
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The center section was replaced when it was rebuilt the compressor wheel has ate something in a previous life but was there before the rebuild I asked about replacing the wheel the re builder said it was fine
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the failure is that its pushing oil out both ends of the turbo the feed line is also new
the in line filter has no restriction I ran this setup on my old motor with no issue the car made 65 psi oil pressure on startup as always
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I just got my draw through turbo back from rebuild new motor this happened less than a minute after start up the burning oil forced me to shut it off. The turbo was pre oiled the drain is clear and perfect low crank case pressure as well. The turbo failed from my last engine coming from together and debris. This time it has a in line filter wih no restricter its a journal bearing rotomaster (Garrett T04 ). Has any one ran in to this I want to make sure I've checked every thing before returning it to the rebuilder
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I have a t -5 with xtd 350z clutch and xtd rb25 fly wheel mine tuns over buy had but have not started it yet Iam planing to fire it up this weekend and will post my results
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yea that was our experience too its easy to get lost there or run out of fuel I have be looking for a permanent mount 2 way radio hands free the hand held always winds up under the seat
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1 or 2 miles cell phones dont work well around tail of the dragon or when driving with 6 or 7 cars
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I am looking for a good 2 way radio for road trips we have tried walkie talkies but they don't work well any ides ?
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this is my frist time using a tig welder it was frustrating at first but with practice now Iam make good welds
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I have started on my down pipe for my turbo tom set up with a borrowed tig welder and a harbor freight chop saw
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Here are the pics of the one in my car you just make your own. I found the local race car shop has lots of tabs that make it easy.
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Thanks for the complement this is my first roll cage. but it does apper to be a total loss your right the main hoop is more than 180 degrees so out it comes. I am looking forward to making my gusets I juist got a 1inch demple die.
Playing with fire
in Nissan L6 Forum
Posted
I’ll probably just by a set of Kameari rockers there 57 grams